Shuttle



March 23, W43. E. E. TALBOT 2,314,669

SHUTTLE Filed Oct. 16, 1941 ATTORNEYS Patented Mar. 23, 1943 UNITED STATES PATENT OFFICE SHUTTLE Evariste E. Talbot, Fall River, Mass. Application October 16, 1941, Serial No. 415,244

.5 Claims.

This invention relates to a shuttle of the automatic threading type designed primarily for use in automatic weft replenishing looms and is'an improvement on the construction of loom shuttle shown in Patent No. 2,220,812 of which I am one of the joint inventors and patentees.

One of the objects of this invention is to provide a shuttle having a plate carrying a guard,-

which guard will permit quicker threading of the shuttle and will be more effective in preventing unthreading of the shuttle as the threading occurs.

Another object of the invention is to provide a more positive threading of the shuttle.

Another object of the invention is to provide an arrangement to prevent unthreading of the shuttle by means of a simple recess in a part carried by the guard plate.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims In the accompanying drawing:

Fig. 1 is a top plan view of the forward end of a shuttle equipped with my invention.

Fig. 2 is a side elevation of the forward end.

Fig. 3 is a section on line 3-3 of Fig. 1.

Fig. 4 is a bottom plan View of guard plate.

Fig. 5 is a perspective view looking on the under side of guard plate.

Fig. 6 is a section on line 6-6 of Fig. 5.

Fig, '7 is a perspective View of the guard plate looking from topside thereof.

Fig. 8. is a perspective View of the forward end of the shuttle with the guard plate omitted and showing grooves and recesses formed in the shuttle.

In the use of the invention as shown 1n prior Patent No. 2,220,812 above referred to I find frequently that the yarn does not quickly enter into the threading groove by reason of the guard carried on the under side of the plate and in order to cause this yarn to enter more quickly I have changed the shape of this guard on the under side of the plate to taper the same to form a small point flaring from the edge, something after the shape of a wedge, by which arrangement the thread will enter beneath the plate much more quickly. Further, I have found that by notching a rib in the forward end of the plate the yarn istrapped and will therefore not become unthreaded as quickly as if there were no such notch provided similar to the case of the prior patent referred to.

With reference to the drawing in detail, I0

designates generally a shuttle formed of wood; or any suitable material with a bobbin chamber II with a threading groove I2 extending forwardly from this bobbin chamber which threading groove communicates with a lateral slot I3 beneath the portion I4 of the shuttle forming a tip I5 which may be referred to as a nose piece although this nose piece is distinct from the nose H5 at the forward end of the shuttle. A delivery eye I1 is provided at the lower outer end of the slot I3 and consists of a coiled wire of hardened material one end I8 of which extends into the nose piece portion I4 and the other end portion 19 of which extends laterally across the shuttle through opening 20 with its end bent into a recess 2| on the opposite outer side wall of the shuttle. This portion I9 is spaced from the opening 20 through the shuttle so that when yarn extends under the nose I5 and is moved down the slot I3 beneath portion I4 it will slide up and over the wire portion I9 of this wire guard and into the loop I! to become threaded in a'known manner.

As seen in Fig. 8 the side walls 22 and 23 of slot I2 are recessed, there being a recess 21 in wall 23 and a recess 25 in wall 22 with a hole 24 extending therefrom through the shuttle. The recess designated generally 25 is also provided with deeper portions 23 at the opposite ends thereof.

The guard plate as shown in perspective in Fig. 5 and Fig. '7 consists of a plate 3!] having an integral post 3| extending downwardly from the under side thereof. This post 3| extends through the hole 24 terminating in a recess 32 in the bottom wall of the shuttle which recess receives a nut 33 threaded on to the post 3|. Slots 34 in the nut receive a spanner wrench, while a lock washer 35 is positioned between the'nut and the bottom of the recess 32 for obtaining tension on the nut 33.

This opening 24 is located on one side of the slot and the plate extends from this side wall I2 across and in overlapping relation with opposite side wall of the slot. This overlapping edge 36 of the late is entirely free and is cut away as at 3! so a to be thinner than the more sturdy portion 38 of the plate. This free edge 36 of the plate is also tapered as at 39 (see Fig. 1) and is beveled as at 40 and 4| (see Fig. 7) from amid portion 42 while it is beveled as at 43 toward the opposite secured edge 440i the plate. In order to prevent the plate from movement about the post 3| enlarged portions 45 and 46 (see Fig. 5) at either end of the plate fit into the recesses 26 in opposite ends of recess 25 as seen in Fig. 8.

The thin free edge portion of the plate extends clear of and. overlaps the stock of the shuttle beneath it so that a thread may be drawn beneath it. On the under side of this overlapping portion there extends downwardly a guard designated generally 41 which is generally in the form of a V as can be seen in the bottom plan view in Fig. 4. This V has arms 48 and 49 which flare from each other from the point 50 which point is located adjacent to or at the free edge 36 of the plate. These arms terminate in abutments and 52 which may be spaced as illustrated or may be of one continuous length and which are substantially straight downwardly or parallel to the post 3| as illustrated in Fig. 3 and form a surface or surfaces to catch the thread should it tend to move out from beneath the plate. The arms 48 and 49 are also inclined as at 53 (Fig. 3) as they progress from the plate downwardly.

This entire guard member 41 is located in recess 21 and is spaced from the side walls of this recess so that a thread may pass downwardly along the inclined surfaces 53 and lodge back of the surfaces 5| or 52 so that the yarn in ballooning cannot move from beneath the plate once it has been threaded in under the same.

A rib 55 extends laterally across the forward edge of the plate and is tapered as at 56 towards the entrance edge 36 of the plate while the notch 51 is provided in this rib in substantially the path'of draw of the yarn on the first pick of the shuttle and which notch provides opposite edges to catch the yarn should it tend to move laterally from beneath the plate and to retard any tendency of the yarn at this location to move from beneath the plate by reason of ballooning.

This rib is located in spaced relation to the surface of the shuttle beneath the same as at 58 so as to provide room for the yarn to move beneath the plate and beneath rib 55 along tapered surface 56 in moving to its threaded position.

In operation yarn as drawn on the first pick of shuttle will extend across the top of the plate and then by reason of ballooning will have an easy access beneath the plate in a path to lodge back of the projecting guard 41. The yarn will also enter beneath rib 55, but should ballooning occur after the yarn is in this position it cannot move from beneath the plate because of its engagement with surfaces 5| and 52 and the edges of notches 51. The yarn will enter much more quickly by the shaping of the guard 41 than were the guard shaped as in the patent referred to and will be more positively held beneath the plate.

I claim:

1. A loom shuttle provided with a bobbin chamber and a threading groove extending forwardly from the chamber, a metal plate supported at one side of the groove and extending laterally across said groove from one wall thereof into overlying relation with the other wall thereof, a rib at the forward end portion of said plate tapered by being reduced in thickness toward the overlying free edge of the plate and provided with a notch therein to catch a laterally moving thread.

2. A loom shuttle provided with a bobbin chamber and a threading groove extending forwardly from the chamber with a recess in the wall thereof, a metal plate supported at one side of the groove and extending laterally across said groove from one wall thereof into overlying relation with the other wall thereof, a guard on the underside of said plate located in said recess and projecting downwardly from said plate, said guard presenting an abrupt inner threadcatching abutment surface and outer surfaces flaring apart as they proceed inwardly from the marginal edge of the plate, and a rib at the forward end portion of said plate provided with a notch therein to catch a laterally moving thread.

3. A loom shuttle provided with a bobbin chamber and a threading groove extending forwardly from the chamber with a recess in the wall thereof, a metal plate supported at one side of the groove and extending laterally across said groove from one wall thereof into overlying relation with the other wall thereof, a guard on the underside of said plate located in said recess and projecting downwardly from said plate, said guard presenting an abrupt inner thread- .catching abutment surface and outer surfaces flaring apart as they proceed inwardly from the marginal edge of the plate, a rib at the forward end portion of said plate tapered by being reduced in thickness toward the overlying free edge of the plate and provided with a notch therein to catch a laterally moving thread.

4. A loom shuttle provided with a bobbin chamber and a threading groove extending forwardly from the chamber with a recess in the wall thereof, a metal plate supported at one side of the groove and extending laterally across said groove from one wall thereof into overlying relation with the other wall thereof, a guard depending from said plate adjacent its marginal edge and extending into said recess, said guard presenting an abrupt inner thread-catching abutment surface and outward thread guiding surfaces intersecting each other in a plane passing centrally in a lateral direction through said guard and flaring apart as they proceed inwardly from the said edge, said surfaces also being tapered inwardly as they progress downwardly from the plate.

5. A loom shuttle provided with a bobbin chamber and a threading groove extending forwardly from the chamber with a recess in the wall thereof, a metal plate supported at one side of the groove and extending laterally across said groove from one wall thereof into overlying relation with the other wall thereof, a V-shaped guard on the underside of said plate and located in said recess with the apex of the V forming a line positioned within the confine of said plate and adjacent the free overlying marginal edge of the plate and slanting a substantial distance inwardly from said edge and providing flaring thread guiding surfaces tapered inwardly as they progress downwardly, and with the top surface of said plate having a portion for the entire length thereof beveled toward the said free overlying edge and extending from either end of the plate at an angle to each other and intersecting in a plane passing substantially through the apex of said V-shaped guard.

EVARISTE TALBOT. 

